/*
 *Copyright (c) 2013-2013, yinqiwen <yinqiwen@gmail.com>
 *All rights reserved.
 * 
 *Redistribution and use in source and binary forms, with or without
 *modification, are permitted provided that the following conditions are met:
 * 
 *  * Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *  * Neither the name of Redis nor the names of its contributors may be used
 *    to endorse or promote products derived from this software without
 *    specific prior written permission.
 * 
 *THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 *AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 *IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 *ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 
 *BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 *CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 *SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 *INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 *CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 *ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 
 *THE POSSIBILITY OF SUCH DAMAGE.
 */

#ifndef REDIS_REPLY_CODEC_HPP_
#define REDIS_REPLY_CODEC_HPP_
#include "channel/codec/stack_frame_decoder.hpp"
#include <deque>
#include <string>
#include "redis_reply.hpp"

namespace ardb
{
	namespace codec
	{
		class RedisMessageDecoder;
		class RedisReplyDecoder: public StackFrameDecoder<RedisReply>
		{
			protected:
				bool Decode(ChannelHandlerContext& ctx, Channel* channel, Buffer& buffer, RedisReply& msg);
				friend class RedisMessageDecoder;
			public:
				RedisReplyDecoder();
		};

		class RedisDumpFileChunkDecoder: public StackFrameDecoder<RedisDumpFileChunk>
		{
			protected:
				int64 m_waiting_chunk_len;
				int64 m_all_chunk_len;
				bool Decode(ChannelHandlerContext& ctx, Channel* channel, Buffer& buffer, RedisDumpFileChunk& msg);
				friend class RedisMessageDecoder;
				RedisDumpFileChunkDecoder() :m_waiting_chunk_len(0),m_all_chunk_len(0)
				{
				}
		};

		class RedisReplyEncoder: public ChannelDownstreamHandler<RedisReply>
		{
			private:
		        //Buffer m_buffer;
				bool WriteRequested(ChannelHandlerContext& ctx, MessageEvent<RedisReply>& e);
			public:
				static bool Encode(Buffer& buf, RedisReply& reply);
		};

		class NullRedisReplyEncoder: public ChannelDownstreamHandler<RedisReply>
		{
			private:
				bool WriteRequested(ChannelHandlerContext& ctx, MessageEvent<RedisReply>& e)
				{
					return true;
				}
		};
	}
}

#endif /* INTERNALMESSAGEDECODER_HPP_ */
